IPOH: While acknowledging that the fish population in the Perak waterways is dwindling, state Fisheries Department director Sani Mohd Isa said there could be other reasons. "The peacock bass problem cannot possibly be the main reason why fishermen were hauling in lesser fish these days.

The Asian Arowana (Scleropages formosus) comprises several phenotypic varieties of freshwater fish that are distributed geographically across Southeast Asia.
As they are native to Southeast Asia, Asian Arowana inhabits blackwater rivers and slow moving water flowing through the forested swamps and wetlands. The adults feed on other fish while the juveniles feed on insects.
These popular aquarium fish have special cultural importance in areas that are influenced by the Chinese culture....

The silver arowana is native to South America in the Amazon, Rupununi, and Oyapock rivers.
It is a freshwater fish that is commonly kept in aquariums. This fish will spend most of its adult life swimming near the surface feeding. It is also very aggressive towards other silver arowana.
The silver arowana is a bony fish that has a long body and very large scales. Both top and bottom fins extend all the way to the tapered tail, which are almost connected together. The mouth slants upward...

The African arowana is native to the African region of Sahelo-Sudanese, Senegal, Gambia, also in the basins of Corubal, Volta, Oueme, Niger, Benoue, and Nile rivers, Lake Chad and Lake Turkana. This species is also found in parts of eastern Africa. The young live in swampy areas where there is an abundant supply of aquatic vegetation, while the adult live in the open water of lakes and rivers. It has been introduced in other countries of Africa and Madagascar, but has been reported by some...

The gulf saratoga, Scleropages jardinii, is regarded as a freshwater bony fish that inhabitates Australia. These fish are found in Northern Australia and New Guinea living in fast-moving water and still water. The gulf saratoga is not endangered or threatened.
The gulf saratoga has several names such as Australian bonytongue, northern saratoga, toga and barramundi and its scientific name S. jardinii. The fish has also been known as the Australian arowanas and the saratoga (S. leichardti)....

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.